| 基于行波固有频率的特高压输电线路故障选相 |
| |
| 引用本文： | 陈双,何正友,李小鹏.基于行波固有频率的特高压输电线路故障选相[J].电网技术,2011(6). |
| |
| 作者姓名： | 陈双 何正友 李小鹏 |
| |
| 作者单位： | 西南交通大学电气工程学院; |
| |
| 基金项目： | 国家自然科学基金项目(50877068); 高等学校博士学科点专项科研基金资助项目(200806130004)~~ |
| |
| 摘 要： | 基于行波原理的故障暂态量选相因所需时间短,符合目前发展超高速保护的要求。针对现有行波选相法存在准确识别波头的困难,提出基于行波固有频率的故障选相方法。该方法利用多信号分类法得到电流模分量功率谱,通过比较其中线模量的主频实现故障选相。该方法的可靠性由基于PSCAD/EMTDC搭建的晋东南—南阳—荆门1 000 kV特高压交流输电线仿真模型实验验证,选相结果不受故障距离、故障时间、过渡电阻的影响,且所需故障数据窗短,易实现超高速保护。
|
| 关 键 词： | 行波 固有频率 故障选相 特高压输电线路 |
Faulty Phase Selection for UHV Transmission Lines Based on Natural Frequencies of Traveling Waves |
| |
| CHEN Shuang,HE Zhengyou,LI Xiaopeng.Faulty Phase Selection for UHV Transmission Lines Based on Natural Frequencies of Traveling Waves[J].Power System Technology,2011(6). |
| |
| Authors: | CHEN Shuang HE Zhengyou LI Xiaopeng |
| |
| Affiliation: | CHEN Shuang,HE Zhengyou,LI Xiaopeng(College of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan Province,China) |
| |
| Abstract: | Because of its rapidity,the traveling wave principle-based faulty phase selection,in which the transient components appeared during the fault process are utilized,can meet the demand of developing ultra-high speed protection.In view of the defect in existing traveling wave-based faulty phase selection that it is difficult to precisely identify the wave front,a new faulty phase selection method based on natural frequencies of traveling waves is proposed.By use of multiple signal classification,the power spec... |
| |
| Keywords: | traveling wave natural frequencies faulty phase selection ultra high voltage(UHV) transmission line |
| 本文献已被 CNKI 等数据库收录！ |
|
